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#!/usr/bin/env python
import sha
import dbus
import dbus.service
import dbus.glib
import pygtk
pygtk.require('2.0')
import gtk, gobject, pango
from sugar.chat.Emoticons import Emoticons
from sugar.chat.ChatToolbar import ChatToolbar
from sugar.chat.ChatEditor import ChatEditor
import richtext
PANGO_SCALE = 1024 # Where is this defined?
class Chat(gtk.Window):
SERVICE_TYPE = "_olpc_chat._tcp"
SERVICE_PORT = 6100
def __init__(self):
gtk.Window.__init__(self, gtk.WINDOW_POPUP)
self._stream_writer = None
vbox = gtk.VBox(False, 6)
vbox.set_border_width(12)
chat_vbox = gtk.VBox()
chat_vbox.set_spacing(6)
self._chat_sw = gtk.ScrolledWindow()
self._chat_sw.set_shadow_type(gtk.SHADOW_IN)
self._chat_sw.set_policy(gtk.POLICY_NEVER, gtk.POLICY_ALWAYS)
self._chat_view = richtext.RichTextView()
self._chat_view.connect("link-clicked", self.__link_clicked_cb)
self._chat_view.set_editable(False)
self._chat_view.set_cursor_visible(False)
self._chat_view.set_pixels_above_lines(7)
self._chat_view.set_left_margin(5)
self._chat_sw.add(self._chat_view)
self._chat_view.show()
chat_vbox.pack_start(self._chat_sw)
self._chat_sw.show()
vbox.pack_start(chat_vbox)
chat_vbox.show()
self._editor = ChatEditor()
toolbar = ChatToolbar(self._editor.get_buffer())
vbox.pack_start(toolbar, False)
toolbar.show()
vbox.pack_start(self._editor, False)
self._editor.show()
self.add(vbox)
vbox.show()
def __get_browser_shell(self):
bus = dbus.SessionBus()
proxy_obj = bus.get_object('com.redhat.Sugar.Browser', '/com/redhat/Sugar/Browser')
self._browser_shell = dbus.Interface(proxy_obj, 'com.redhat.Sugar.BrowserShell')
def __link_clicked_cb(self, view, address):
self.__get_browser_shell().open_browser(address)
def _scroll_chat_view_to_bottom(self):
# Only scroll to bottom if the view is already close to the bottom
vadj = self._chat_sw.get_vadjustment()
if vadj.value + vadj.page_size > vadj.upper * 0.8:
vadj.value = vadj.upper - vadj.page_size
self._chat_sw.set_vadjustment(vadj)
def _message_inserted(self):
gobject.idle_add(self._scroll_chat_view_to_bottom)
self.set_has_changes(True)
def _insert_buddy(self, buf, nick):
# Stuff in the buddy icon, if we have one for this buddy
buddy = self._controller.get_group().get_buddy(nick)
icon = buddy.get_icon_pixbuf()
if icon:
rise = int(icon.get_height() / 4) * -1
chat_service = buddy.get_service(Chat.SERVICE_TYPE)
hash_string = "%s-%s" % (nick, chat_service.get_address())
sha_hash = sha.new()
sha_hash.update(hash_string)
tagname = "buddyicon-%s" % sha_hash.hexdigest()
if not buf.get_tag_table().lookup(tagname):
buf.create_tag(tagname, rise=(rise * PANGO_SCALE))
aniter = buf.get_end_iter()
buf.insert_pixbuf(aniter, icon)
aniter.backward_char()
enditer = buf.get_end_iter()
buf.apply_tag_by_name(tagname, aniter, enditer)
# Stick in the buddy's nickname
if not buf.get_tag_table().lookup("nickname"):
buf.create_tag("nickname", weight=pango.WEIGHT_BOLD)
aniter = buf.get_end_iter()
offset = aniter.get_offset()
buf.insert(aniter, " " + nick + ": ")
enditer = buf.get_iter_at_offset(offset)
buf.apply_tag_by_name("nickname", aniter, enditer)
def _insert_rich_message(self, nick, msg):
msg = Emoticons.get_instance().replace(msg)
buf = self._chat_view.get_buffer()
self._insert_buddy(buf, nick)
serializer = richtext.RichTextSerializer()
serializer.deserialize(msg, buf)
aniter = buf.get_end_iter()
buf.insert(aniter, "\n")
self._message_inserted()
def _insert_sketch(self, nick, svgdata):
"""Insert a sketch object into the chat buffer."""
pbl = gtk.gdk.PixbufLoader("svg")
pbl.write(svgdata)
pbl.close()
pbuf = pbl.get_pixbuf()
buf = self._chat_view.get_buffer()
self._insert_buddy(buf, nick)
rise = int(pbuf.get_height() / 3) * -1
sha_hash = sha.new()
sha_hash.update(svgdata)
tagname = "sketch-%s" % sha_hash.hexdigest()
if not buf.get_tag_table().lookup(tagname):
buf.create_tag(tagname, rise=(rise * PANGO_SCALE))
aniter = buf.get_end_iter()
buf.insert_pixbuf(aniter, pbuf)
aniter.backward_char()
enditer = buf.get_end_iter()
buf.apply_tag_by_name(tagname, aniter, enditer)
aniter = buf.get_end_iter()
buf.insert(aniter, "\n")
self._message_inserted()
def _get_first_richtext_chunk(self, msg):
"""Scan the message for the first richtext-tagged chunk and return it."""
rt_last = -1
tag_rt_start = "<richtext>"
tag_rt_end = "</richtext>"
rt_first = msg.find(tag_rt_start)
length = -1
if rt_first >= 0:
length = len(msg)
rt_last = msg.find(tag_rt_end, rt_first)
if rt_first >= 0 and rt_last >= (rt_first + len(tag_rt_start)) and length > 0:
return msg[rt_first:rt_last + len(tag_rt_end)]
return None
def _get_first_sketch_chunk(self, msg):
"""Scan the message for the first SVG-tagged chunk and return it."""
svg_last = -1
tag_svg_start = "<svg"
tag_svg_end = "</svg>"
desc_start = msg.find("<?xml version='1.0' encoding='UTF-8'?>")
if desc_start < 0:
return None
ignore = msg.find("<!DOCTYPE svg")
if ignore < 0:
return None
svg_first = msg.find(tag_svg_start)
length = -1
if svg_first >= 0:
length = len(msg)
svg_last = msg.find(tag_svg_end, svg_first)
if svg_first >= 0 and svg_last >= (svg_first + len(tag_svg_start)) and length > 0:
return msg[desc_start:svg_last + len(tag_svg_end)]
return None
def recv_message(self, buddy, msg):
"""Insert a remote chat message into the chat buffer."""
if not buddy:
return
chunk = self._get_first_richtext_chunk(msg)
if chunk:
self._insert_rich_message(buddy.get_nick_name(), chunk)
return
chunk = self._get_first_sketch_chunk(msg)
if chunk:
self._insert_sketch(buddy.get_nick_name(), chunk)
return
def send_sketch(self, svgdata):
if not svgdata or not len(svgdata):
return
self._stream_writer.write(svgdata)
owner = self._controller.get_group().get_owner()
self._insert_sketch(owner.get_nick_name(), svgdata)
def send_text_message(self, text):
"""Send a chat message and insert it into the local buffer."""
if len(text) <= 0:
return
self._stream_writer.write(text)
owner = self._controller.get_group().get_owner()
self._insert_rich_message(owner.get_nick_name(), text)
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